list four sources of magnetic field
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four source of magnetic field are
Permanent magnet
electromagnet
current- carrying conductor
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Four sources of electro magnet are :
(1) By using of electro magnet.
(2) By using of permanent magnet.
(3) By passing the current from loop wire.
(4) By using a electric current through straight wire or a circular cool
(1) By using of electro magnet.
(2) By using of permanent magnet.
(3) By passing the current from loop wire.
(4) By using a electric current through straight wire or a circular cool
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